Noun:

1. migration into a place (especially migration to a country of which you are not a native in order to settle there)

2. the body of immigrants arriving during a specified interval;

   "the increased immigration strengthened the colony"
   

migrationn.移民；移往；移动

settlementn.解决；结算；协议；安置；殖民；定居

colonizationn.殖民；殖民地化

arrivaln.到达；达到；到达者；新生儿

entryn.进入；进入权；入口；条目

in-migrationn.移来；迁入

emigrationn.移民

1. He is talking about immigration.
   他正在谈论移居国外的事.
2. There are strict controls on immigration into this country.
   移民到这个国家有严格的限制。
3. The increased immigration strengthened the colony.
   移民的增加巩固了这个殖民地。